# Intro to Object Orientation - Ruby
## Intro to Object Orientation - Ruby - Review Lecture
### Objectives:
* Define a new class using the `class` keyword.
* Instantiate instances of the class with the class constructor `new`.
* Add instance methods to your class with `def` in the body of the class.
* Set instance variables through writer instance methods.
* Identify the scope of an instance variable.
* Read an instance variable through a reader instance method.
* Use `attr_accessor` to define reader and writer methods for attributes.
* Hook into an object's instantiation with `#initialize`.
### Video
\
[Direct link to MP4.](http://learn-co-videos.s3.amazonaws.com/ruby/Intro.to.OO.ruby.LV.mp4)
*This video is meant to be a review of the first few topics in Object Orientation in Ruby.*
View [Intro to Object Orientation - Ruby - Review Lecture](https://learn.co/lessons/intro-to-object-orientation-ruby) on Learn.co and start learning to code for free.
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